JP2008209027A - Humidifying member and humidifier using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of lowering in humidifying efficiency of a humidifier, because it takes much time to uniformly supply water from the outer peripheral part of a humidifying member to the central part, so that a liquid for supplementing moisture in the interior of the humidifying member which is lost by humidifying gas cannot be quickly supplied to the humidifying member. <P>SOLUTION: In this humidifying member 1, gas is blown to the humidifying member 1 absorbing and retaining liquid to evaporate the liquid and humidify the gas. In the humidifying member 1, a plurality of flat porous bodies 2 including a plurality of groove parts 3 provided on the principal surface along the blowing direction of gas are superposed one on the other. Thus, a very small gap produced in the superposed surfaces forms a flow passage for liquid, whereby the liquid can be quickly supplied to the whole humidifying member 1, and also the groove parts 3 function as flow passage for gas, thereby preventing pressure loss of gas to increase the flow of gas. The humidifier 10 having the humidifying member 1 can heighten the humidifying efficiency. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a humidifying member for humidifying a gas by blowing gas to a humidifying member that absorbs and holds the liquid and evaporating the liquid, and a humidifier using the humidifying member.

  Conventionally, as a humidifier used for the purpose of indoor humidity adjustment, water is heated to a boil by a heat source and the water vapor is released, and the water is changed into fine mist-like particles by ultrasonic vibration. There are ultrasonic methods that can be released, or vaporization methods that allow air to pass through a filter that absorbs and retains water and releases moist air, etc., and are used in usage environments according to the characteristics of each method Yes.

  FIG. 5 is a schematic cross-sectional view showing an example of a conventional vaporizing humidifier.

  This conventional vaporization type humidifier 30 is composed of a gas intake port 31, an air blowing means 32, a humidifying member 33 made of a porous material having a hygroscopic property, a liquid supply unit 34, and a gas blowing port 35. ing. If this humidifier 30 is used, the gas is taken in from the gas inlet 31 and brought into contact with the humidifier 33 that absorbs and holds the gas supplied from the air supply means 32 and the liquid supplied from the liquid supply unit 34. The humidified gas is released from the gas outlet 35.

  However, in such a humidifier 30, since it takes time for the liquid supplied from the liquid supply unit 34 to be supplied to the entire humidifying member 33, the humidifier 30 contains the inside of the humidifying member 33 lost by humidifying the gas. There is a problem that the humidifying efficiency of the humidifier 30 is low because the liquid for supplementing the water is not quickly supplied to the humidifying member 33.

  To solve this problem, for example, Patent Document 1 discloses a water supply unit that uses a humidifying member that is formed of porous ceramics and has a large number of through holes, and supplies water from the entire circumferential direction of the humidifying member. A humidifier with is described. According to this humidifier, since the humidifying member is formed in a shape in which the opening ratio in the blowing direction of the blowing unit is large and the surface area is as large as possible, the air passes well through the humidifying member, and the pressure of the blowing unit Loss is reduced, and the contact area between the air and the humidifying member is increased, so that the humidification efficiency can be improved.

Patent Document 2 discloses a humidifying member made of a skewed honeycomb having a honeycomb shape by laminating a plurality of corrugated sheets made of ceramic fibers, a frame body surrounded by a wall surface in the horizontal direction, and a plurality of upper water-permeable holes. An upper perforated plate that is drilled and disposed at the top of the frame without any gap between the wall and a plurality of lower water-permeable holes and that is disposed at the bottom of the frame without any gap and substantially parallel to the upper perforated plate There is described a humidifier comprising a water distribution part composed of a lower perforated plate arranged separately, a sprinkling means having a sprinkling pipe for supplying water to the upper perforated plate, a water receiving part, and a blowing means. ing. According to this humidifier, water is dispersed from a lower surface of the sprinkling means over a wide range at a substantially uniform flow rate and flows down to the upper surface of the humidifying member made of the skewed honeycomb, so that the humidification can be efficiently performed.
JP-A-6-66437 JP2003-326102A

  However, in the humidifier disclosed in Patent Document 1, even if water is supplied from the entire circumferential direction of the humidifying member, it still takes time to supply water uniformly from the outer peripheral portion to the central portion. There is a problem in that the humidifying efficiency of the humidifier is lowered because the liquid for replenishing the moisture inside the humidifying member lost by humidifying is not supplied to the humidifying member promptly.

  Further, the humidifier disclosed in Patent Document 2 uses a skewed honeycomb obtained by laminating and bonding a plurality of corrugated sheets made of ceramic fibers as a humidifying member, and from the upper surface opening of the skewed honeycomb. Although it has an excellent effect in terms of supplying water uniformly and promptly to the entire humidifying member, the corrugated sheet made of ceramic fibers or the like forming the skewed honeycomb has a thin thickness of around 0.5 mm. Since the amount of water that the humidifying member can hold and supply water is small, it is necessary to increase the amount of water supplied from the top in order to supply the moisture inside the humidifying member that has been lost by humidifying the air. In addition, there is a problem that the size of the entire humidifier becomes large due to the large size of the water storage tank and the circulation pipe.

  The present invention has been devised to solve the above-mentioned problems, and is capable of increasing the amount that the humidifying member can absorb and hold the liquid at the same time that the liquid permeates the entire humidifying member quickly. An object is to provide a member. Moreover, it aims at providing the humidifier with high humidification efficiency by using the humidification member of this invention.

  The humidifying member of the present invention is a humidifying member for a humidifier for blowing gas to the humidifying member that absorbs and holds the liquid, evaporating the liquid, and humidifying the gas, and follows the air blowing direction of the gas A plurality of flat porous bodies having a plurality of grooves on the main surface are overlaid.

  The humidifying member of the present invention is characterized in that, in the above configuration, the porous body is made of ceramics.

  Moreover, the humidifier of this invention has the humidification member of this invention of one of the said structures, It is characterized by the above-mentioned.

  Moreover, the humidifier of this invention has a heating part which heats the said humidification member in the said structure, It is characterized by the above-mentioned.

  According to the humidifying member of the present invention, a humidifying member for a humidifier for blowing gas to the humidifying member that absorbs and holds the liquid and evaporating the liquid to humidify the gas, and the main humidifier along the gas blowing direction. By overlapping a plurality of flat plate-like porous bodies having a plurality of groove portions on the surface, there are minute gaps generated on the overlapping surfaces of the flat plate-like porous bodies having a plurality of groove portions on the main surface. It becomes a flow path of the liquid between the groove parts, and the liquid can be quickly supplied to the whole humidifying member made of the porous body. In addition, since the liquid for supplementing the moisture inside the humidifying member lost by humidifying the gas can be quickly supplied to each part of the humidifying member, the humidifying efficiency of the humidifier can be improved. Furthermore, since a plurality of grooves provided on the main surface of the porous body can be used as a liquid supply path, in that case, the liquid can be efficiently and rapidly supplied to the entire humidifying member. It becomes. Further, since the plurality of groove portions of the porous body are provided on the main surface along the gas blowing direction, it is possible to efficiently humidify the gas passing through the groove portion, and to efficiently supply the liquid. In combination with the above, the desired humidification of the gas can be stably performed.

  Further, according to the humidifying member of the present invention, when the porous body of the humidifying member is made of ceramic, the mechanical strength of the humidifying member is improved and the heat resistance is improved. Even if the humidification member is clogged due to dust, dust, precipitation of impurities contained in the liquid, etc. and the humidification efficiency decreases, heat treatment at high temperature is possible, so the humidification efficiency can be restored by heat treatment, It is possible to greatly extend the humidifying member replacement cycle. In addition, even if algae and germs start to grow on the humidifying member after long-term use, the algae can be removed and sterilized easily and reliably by heat treatment at high temperatures, and humidification is performed in a hygienic state. Can continue.

  Further, according to the humidifier of the present invention, by using the humidifying member of the present invention having such excellent characteristics, the humidification efficiency is high, so the size is smaller than before, the running cost is low, and the hygiene aspect is excellent. Can be a humidifier.

  Furthermore, according to the humidifier of the present invention, when the heating unit for heating the humidifying member is provided, the humidifying efficiency can be improved by shortening the time until the start of humidification and increasing the humidifying amount, and algae, germs, etc. are propagated on the humidifying member. Even when starting to do so, it is possible to remove and sterilize algae and the like with a heating unit such as a heater, so that a humidifier excellent in hygiene can be obtained.

  Hereinafter, the example of embodiment of the humidification member and humidifier of this invention is demonstrated.

  FIG. 1 is a perspective view showing an example of an embodiment of a humidifying member and a humidifier according to the present invention.

  The humidifier 10 includes a humidifying member 1, a liquid supply unit 4 for supplying a liquid to the humidifying member 1, a blowing unit 5 that sends gas to the humidifying member 1, and a humidifying member that is not absorbed and held by the humidifying member 1. 1 is provided with a liquid receptacle 6 for collecting and circulating the liquid dropped from the lower part of 1.

  In addition, a water supply pump (not shown) is connected to the liquid supply unit 4, and the liquid is dropped or sprayed from a water supply hole provided in the liquid supply unit 4 to supply the liquid to the humidifying member 1. Of the supplied liquid, the liquid that has not been absorbed and held by the humidifying member 1 is dropped to the lower side of the humidifying member 1 and recovered in the liquid receiver 6. The recovered liquid is supplied to the liquid receiver 6 and the liquid supply. It is circulated through a pipe (not shown) connecting the section 4 and a water supply pump.

  The air blowing means 5 can be appropriately selected and used according to the required air volume and speed, such as a propeller fan or a turbo blower. For example, a propeller fan may be used to make the humidifier 10 as small as possible, and a turbo blower with a large air volume may be used to make the humidifier 10 used for humidifying a large room.

  If this humidifier 10 is used, the gas sent from the blower 5 and the humidified member 1 that absorbs and holds the liquid supplied from the liquid supply unit 4 are brought into contact with each other, whereby the gas humidified by the humidified member 1 is used. Is released. At this time, it is important that the humidifying member 1 has a plurality of planar porous bodies 2 each having a plurality of groove portions 3 provided on the main surface along the gas blowing direction.

  FIG. 2 shows an example of an embodiment of the humidifying member of the present invention, (a) is a perspective view of the humidifying member in which a plurality of flat plate-like porous bodies provided with grooves are stacked, and (b) FIG. 7 is a perspective view of a porous body having a rectangular cross-sectional shape of the groove, (c) a porous body having a semicircular cross-sectional shape of the groove, and (d) a perspective view of a porous body having a triangular cross-sectional shape of the groove. . In addition, the some arrow arrange | positioned on the right and left of the humidification member 1 in Fig.2 (a) shows the ventilation direction of the gas with respect to the humidification member 1. FIG.

  Like the example shown to Fig.2 (a), the humidification member 1 of this invention superimposes the flat porous body 2 which provided the several groove part 3 in the main surface along the ventilation direction of gas in multiple numbers. As a result, the liquid supplied from the liquid supply unit 4 rapidly penetrates from the upper part to the lower part through the minute gaps generated on the overlapping surfaces of the respective porous bodies 2, and the groove part of the porous body 2. Since the liquid is quickly supplied in the left-right direction through 3, the liquid is quickly supplied to the entire humidifying member 1, so that the humidifying efficiency by the humidifier 10 using the humidifying member 1 is improved. Can do.

  Thus, in order to improve the humidification efficiency, it is necessary to reduce the pressure loss applied to the gas sent by the blowing means 5 and passing through the humidifying member 1, and the cross-sectional shape of the groove 3 is an example shown in (b). The air volume of the humidifier 10 is provided in parallel with the air blowing direction as a rectangular shape such as shown in FIG. 5, a semicircular shape like the example shown in FIG. It is preferable that the liquid absorbed and held by the humidifying member 1 is evaporated more efficiently.

  FIG. 3 shows another example of the embodiment of the porous body constituting the humidifying member of the present invention, (e) is an example of a porous body provided with inclined grooves, and (f) is a wave-shaped groove. (G) is a perspective view of an example of a porous body provided with intersecting grooves.

  In the example shown in FIGS. 2B to 2D, the plurality of grooves 3 are provided in parallel to the air blowing direction in order to increase the air volume. 3 (e) as shown in the example shown in FIG. 3 (e), the channel for inclining the groove 3 is extended, or the channel is waved like in the example shown in (f), or the groove 3 is shown in the example shown in (g). It is also possible to increase the contact area between the humidifying member 1 that absorbs and holds the gas and the liquid. It is preferable to configure the humidifying member 1 by appropriately selecting or combining FIGS. 2 (b) to 2 (d) and FIGS. 3 (e) to (g) according to the desired air volume and humidification amount.

  Furthermore, in order to quickly supply the liquid to the entire humidifying member 1, a minute groove is formed in the overlapping surface of the porous body 2 in at least one of the vertical direction, the horizontal direction, and the diagonal direction. In this case, fine grooves may be formed by machining the overlapping surface of the porous body 2 with a slicing machine or the like using a thin blade diamond grindstone.

  The groove 3 of the porous body 2 may be provided only on one main surface or on both main surfaces. In any case, a minute gap generated on the overlapping surface between the main surface between the groove portions 3 and the main surface of the adjacent porous body 2 (with or without the groove portion 3) is a liquid flow path between the groove portions. Thus, the liquid can be quickly supplied to the entire humidifying member made of the porous body.

  The material of the porous body 2 constituting the humidifying member 1 used in the humidifier 10 of the present invention is not particularly limited as long as it is porous. Resin, ceramics, metal, pumice, shirasu, or the like may be used. However, considering the mechanical strength of the humidifying member 1 and the heat resistance during cleaning and sterilization by heat treatment, ceramics are preferable.

  FIG. 4 is a perspective view showing another example of the embodiment of the humidifier of the present invention. In addition, the same code | symbol is shown using the same member as FIG.

  The humidifier 20 shown in FIG. 4 includes a humidifying member 1, a liquid supply unit 4 for supplying a liquid to the humidifying member 1, a blowing means 5 for sending gas, and the humidifying member 1 without being absorbed and held by the humidifying member 1. A liquid receiver 6 for collecting and circulating the liquid dripped from the lower part of the liquid, a heating unit 7 attached to both ends of the humidifying member 1 for heating the humidifying member 1, and simultaneously supplying heating power to the heating unit 7 And a temperature controller 8 for adjusting the heating temperature.

  By adopting such a configuration, the humidifying member 1 is heated by the heating unit 7 to facilitate the evaporation of the liquid, shorten the time until the start of humidification, or improve the humidification efficiency from the increase of the humidification amount. Or by drying the liquid absorbed and retained by the humidifying member 1 when the operation is stopped, to suppress the adherence and propagation of germs or the like to the humidifying member 1, or to raise the humidifying member 1 to a high temperature of 100 ° C. or higher. Thus, since the germs, pathogens, viruses and the like attached to the humidifying member 1 can be killed and sterilized, the humidifier 20 excellent in hygiene can be obtained.

  Further, the heating unit 7 does not necessarily have to be in contact with the humidifying member 1 and may be installed close to the humidifying member 1, but heating is performed by applying a resistor printing technique or a lamination technique to ceramics. A porous body 2 having a built-in heater may be produced, and a plurality of these may be stacked to form the humidifying member 1. In this way, it is not necessary to provide a separate installation space for the heating unit 7, and the humidifier 20 can be downsized.

  Further, since the humidifying member 1 is formed by stacking a plurality of porous bodies 2, a heating unit 7 made of a plate heater may be sandwiched between the porous bodies 2. With such a structure, as shown in the example shown in FIG. 4, it becomes possible to quickly heat the entire humidifying member 1 as compared with the case where the heating unit 7 is disposed at both ends of the humidifying member 1. There is an effect that the time required for drying and sterilization by heating the humidifying member 1 can be shortened.

  As a manufacturing method of the porous body 2 constituting the humidifying member 1 made of such ceramics, a forming raw material is formed into a desired shape by a forming method such as a powder pressure forming method, an extrusion forming method, an injection forming method, After performing machining as necessary, heat treatment is performed in a predetermined temperature pattern in a firing furnace to burn out the binder and sinter the ceramic particles, and further, machining is performed as necessary. A porous body 2 can be obtained.

  Here, the manufacturing method of the porous body 2 using the extrusion molding method will be described in detail.

  First, a ceramic powder having a predetermined particle size, a binder, and water are mixed with a mixing and stirring mixer, kneaded with a kneader or the like to obtain a clay-like forming raw material, and the screw and the screw are partially formed Molding is performed using a barrel-type extrusion machine having a configuration in which a barrel portion having an inlet for raw material is opened and a mold is connected to the outlet side of the barrel portion.

  At this time, as the ceramic powder, alumina, zirconia, silicon nitride, silicon carbide, aluminum nitride, ferrite, etc. are appropriately selected according to the purpose of use, and silicon oxide, calcium oxide, magnesium oxide, nickel oxide are used as necessary. Sintering aids such as zinc oxide and copper oxide may be added. Further, as the binder, it is preferable to use water-soluble cellulose ether in consideration of the flowability of the molding raw material at the time of extrusion molding, the shape retention and strength of the molded body, and the debinderability. The addition amount should just add water-soluble cellulose ether in the ratio of 0.5-25 mass parts with respect to 100 mass parts of ceramic powder. If the added amount of the binder is less than 0.5 parts by mass, the fluidity of the molding raw material during extrusion molding deteriorates, the molding raw material is clogged, or the strength of the obtained molded body is insufficient, and handling is difficult. Therefore, it is not preferable. In addition, if the added amount of the binder exceeds 25 parts by mass, it takes a long time to burn out the binder at the time of firing, resulting in poor production efficiency, and the shrinkage rate when the binder is burned out increases, resulting in deformation of the molded body. This is not preferable because it tends to cause damage. Therefore, if the amount of water-soluble cellulose ether added is 0.5 to 25 parts by mass, a molded body having a strength sufficient to withstand handling can be obtained without causing clogging of the molding raw material and without clogging.

  Moreover, as a solvent to be added to dissolve and soften the binder and give the molding raw material at the time of extrusion molding appropriate fluidity, water having excellent solubility in cellulose ether as a binder and excellent safety can be used. Is preferably used. The amount of water added may be adjusted in consideration of the fluidity of the forming raw material at the time of extrusion molding and the strength of the molded body after extrusion molding. What is necessary is just to add in the ratio of a mass part.

  The molding raw material thus obtained is charged from a charging port opened in the barrel portion. The injected molding raw material is pushed out by the rotation of the screw through the gap between the screw and the inner wall of the barrel portion in the direction of the die connected to the outlet side of the barrel portion, and passes through this die. A molded body is obtained. At this time, the cross-sectional shape of the exit of the mold is, for example, the cross-sectional shape of the porous body 2 shown in FIG. Obtainable.

  Next, this molded body is dried. Rapid drying may deform the molded body, so it may be natural drying, but it is performed in combination with natural drying for a certain period of time and drying that removes residual moisture in a drying room set at a temperature of about 80 ° C with a kerosene boiler. Is preferred. Further, a method of heating and drying the inside of the molded body using high frequency or microwave is also an effective means in that the deformation of the molded body can be prevented and drying can be performed in a short time.

  And after drying a molded object, baking is performed. The firing temperature pattern varies depending on the type and particle size of the ceramic powder used. For example, if alumina with an average particle size of 40 μm is used, it takes 2 to 6 hours from room temperature to 300 to 500 ° C. Then, the binder contained in the compact is burned off by providing a holding time of 1 to 4 hours thereafter. Thereafter, the temperature is raised to a maximum temperature of 1000 to 1600 ° C. over 2 to 6 hours, a holding time of 1 to 4 hours is provided, and then gradually cooled to room temperature.

  The porosity of the obtained porous body 2 may be adjusted and used in accordance with the required amount of absorption and humidification of the liquid, but the amount of absorption and humidification is increased as much as possible. In order to improve the humidification efficiency of the vessel 20, a porosity of 15 to 70% is suitable. If the porosity of the porous body 2 is less than 15%, it takes time until the supplied liquid penetrates the entire humidifying member 1, so that the humidifying efficiency of the humidifier 20 decreases during that time and exceeds 70%. The supplied liquid passes through the porous body 2 without being absorbed and held by the porous body 2 and drops downward, which is not preferable because the humidifying efficiency of the humidifier 20 decreases. In order to further increase the humidification efficiency of the humidifier 20 by increasing the amount of the supplied liquid that quickly penetrates the entire humidifying member 1 and the amount of liquid absorbed and retained by the humidifying member 1 as much as possible, The porosity of 2 is more preferably 35 to 60%.

  Moreover, there is no restriction | limiting in particular regarding the magnitude | size of the porous body 2, For example, when the humidification member 1 of a large size is required, although the magnitude | size of the porous body 2 may be enlarged, a small-sized porous body is sufficient. A plurality of humidifying members 1 in which a plurality of bodies 2 are superposed may be combined as a humidifying member 1 having a desired size by combining a plurality of humidifying members 1 vertically and horizontally and front and rear.

  Moreover, as a magnitude | size of the groove part 3 provided in the porous body 2, the range whose depth is 20 to 80% with respect to the thickness of the porous body 2 is preferable. If it is less than 20%, the contact area with the gas is not sufficient, so the humidification efficiency of the humidifier 20 is reduced. If it exceeds 80%, the strength of the porous body 2 is significantly reduced, and the production of the porous body 2 is performed. The yield of the process is reduced, leading to an increase in the manufacturing cost of the porous body 2 or when the humidifier 20 is used as the humidifier 20, the humidifying member 1 is used for the purpose of improving the humidification efficiency and suppressing the adhesion and propagation of bacteria. It is not preferable because it may be damaged by heating.

  Furthermore, when a plurality of porous bodies 2 are overlapped, it is important that they are overlapped so that a minute gap is formed on the overlapping surface. For this purpose, for example, by applying an adhesive material partially on the overlapping surface and adhering so as to form a minute gap on the overlapping surface, using an adhesive that becomes porous after curing, using a clamp Fix the porous body 2 by fixing the porous body 2 by appropriately selecting from a method such as fixing or inserting a porous body 2 in which a plurality of layers are superimposed on a frame body having a predetermined size. That's fine.

  Further, by forming a fine groove in at least one of the vertical direction, the horizontal direction, and the oblique direction by machining with a slicing machine using a thin blade diamond grindstone on the overlapping surface of the porous body 2. preferable. As a result, the liquid can be quickly supplied to the entire humidifying member 1.

  Further, for the purpose of suppressing the propagation of germs, pathogenic bacteria, viruses, etc. on the humidifying member 1, the porous body 2 may be made of a material having an antibacterial action, or a substance having an antibacterial action on the porous body 2 May be impregnated or the surface may be coated. Examples of the substance having an antibacterial action include silver, copper, zinc, nickel, titanium oxide, and titanium phosphate, which can be appropriately selected and used.

  As described above, the humidifying member 1 of the present invention has a plurality of flat plate-like porous bodies 2 provided with a plurality of grooves 3 on the main surface along the gas blowing direction. The generated minute gap becomes a liquid flow path, and the groove 3 can also be used as a liquid supply path, so that the liquid can be quickly supplied to the entire humidifying member 1. In addition, since the liquid for supplementing the moisture inside the humidifying member 1 lost by humidifying the gas can be quickly supplied to the humidifying member 1, the humidifying efficiency of the humidifier 20 can be improved.

  Further, when the humidifying member 1 is made of ceramics, the mechanical strength of the humidifying member 1 is improved, and at the same time, the heat resistance is improved. For example, the humidifying member 1 is contained in dust, dust, or liquid in the atmosphere after long-term use. Even if the humidification member 1 is clogged due to the precipitation of impurities and the humidification efficiency is lowered, it is possible to perform the heat treatment at a high temperature, so it is possible to remove the impurities deposited by the heat treatment and restore the humidification efficiency, The replacement cycle of the humidifying member 1 can be greatly extended.

  Further, the humidifier 10 using the humidifying member 1 has a high humidification efficiency, so that the humidifier 10 is more compact than the conventional one, has a low running cost, and is excellent in hygiene.

  Furthermore, the humidifier 20 having the heating unit 7 that heats the humidifying member 1 of the present invention heats the humidifying member 1 by the heating unit 7, thereby facilitating the evaporation of the liquid and reducing the time until the start of humidification. The humidification efficiency can be improved by increasing the humidification amount. Also, by drying the liquid held and absorbed by the humidifying member 1 when the operation is stopped, the adhesion and propagation of various bacteria on the humidifying member 1 are suppressed, or the humidifying member 1 is heated to a high temperature of 100 ° C. or higher. It is possible to kill and sterilize germs, pathogens, viruses, etc. adhering to the humidifying member 1, and not only for humidity adjustment in general homes and factories, but also hospitals and elderly welfare facilities where hygiene is important, It can also be suitably used in kindergartens and nurseries.

  Moreover, the humidifier 20 does not necessarily need to be provided with the air blowing means 5, and can be used in combination with an existing air blower, an air conditioner, an air purifier or the like having a means for separately blowing air.

  Examples of the present invention are shown below.

  Sample No. of the humidifying member 1 of the present invention. 1, the width is 2.5mm, the depth is 2.5mm, and the groove on one main surface of a porous body (porosity 55%) made of polyethylene resin with a height of 52.5mm, thickness of 5.0mm, and depth of 50.0mm A flat plate-like porous body 2 having 10 rectangular grooves 3 with a pitch of 5.0 mm between them was produced. Ten porous bodies 2 are overlapped so that one main surface provided with a plurality of groove portions 3 does not overlap each other, and further, on the surface where the groove portions 3 of the porous body 2 are exposed at the end portions. Sample No. 52.5 mm in length, 52.5 mm in width, and 50.0 mm in depth by overlapping porous bodies made of the same polyethylene resin having a height of 52.5 mm, a thickness of 2.5 mm, and a depth of 50.0 mm. 1 humidifying member 1 was obtained.

  Next, sample no. In preparation of No. 2, high-purity alumina having an average particle size of 40 μm as a raw material for the porous body 2, cellulose ether as a binder, and water were prepared. Then, with respect to 100 parts by mass of the high-purity alumina and 100 parts by mass of the high-purity alumina, 15 parts by mass of cellulose ether and 25 parts by mass of water were mixed in a commercially available mixing and stirring mixer and kneaded with a kneader. Thus, a forming raw material was obtained. Next, this forming raw material was extruded using a screw type extrusion molding machine equipped with a mold having a cross-sectional shape capable of obtaining the porous body 2 shown in FIG. 2 (b). The molded object which provided the rectangular-shaped groove part 3 to show was obtained.

  And this molded object was dried. In drying, in order to avoid rapid drying, it was naturally dried for a certain time and then combined with drying in a drying room set at a temperature of about 80 ° C. with a kerosene boiler or the like. After drying the molded body, the temperature was raised from room temperature to 400 ° C. over 4 hours in an oxidizing atmosphere in a firing furnace, and the binder was burned out by holding at 400 ° C. for 2 hours. Thereafter, the temperature is raised to 1400 ° C. over 4 hours, a holding time of 2 hours is provided, and then gradually cooled to room temperature over 8 hours, whereby a porous ceramic body provided with a plurality of grooves 3 on the main surface 2 was obtained. As a result of measuring the average pore diameter and the porosity of the porous ceramic body 2 obtained in this way by a mercury intrusion method, the average pore diameter was 1.5 μm and the porosity was 42.5%.

  The ceramic porous body 2 produced by the above method has a height of 52.5 mm, a thickness of 5.0 mm, a depth of 50.0 mm, a width of 2.5 mm, a depth of 2.5 mm, and a groove on one main surface. Ten rectangular grooves 3 having a pitch of 5.0 mm between them are provided. Then, 10 ceramic porous bodies 2 are overlapped so that one main surface provided with the plurality of groove portions 3 does not overlap each other, and the groove portions 3 of the porous body 2 located at the end portions are exposed. Sample No. 52.5 mm in length, 52.5 mm in width, and 50.0 mm in depth is overlapped with the same quality ceramics with a height of 52.5 mm, thickness of 2.5 mm, and depth of 50.0 mm. 2 humidifying members 1 were obtained.

  Next, the sample No. of the humidifying member 1 of the present invention. 3, ten ceramic porous bodies 2 were produced by the same method as described above, and a thin blade diamond grindstone (grain size 240 mm) having a thickness of 0.5 mm was formed on the convex portion of one main surface provided with the rectangular groove 3. ) Was machined with a slicing machine using 2) to form two minute grooves with a width of 0.5 mm and a depth of 0.5 mm at intervals of 1 mm in the left-right direction. Then, 10 ceramic porous bodies 2 are overlapped so that one main surface provided with the plurality of groove portions 3 does not overlap each other, and the groove portions 3 of the porous body 2 located at the end portions are exposed. By superimposing a homogeneous ceramic material with a height of 52.5 mm, a thickness of 2.5 mm, and a depth of 50.0 mm on the surface, the sample No. with a length of 52.5 mm, a width of 52.5 mm, and a depth of 50.0 mm was obtained. 3 humidifying members 1 were obtained. Sample No. The porous bodies 2 of 1 to 3 were fixed using a clamp.

  Further, as a humidifying member of Comparative Example 1, a humidifying member made of a polyethylene body (porosity 55%) made of polyethylene resin having a vertical length of 52.5 mm, a horizontal width of 52.5 mm, and a depth of 50.0 mm, and having no groove on the main surface is manufactured. did. Further, as Comparative Example 2, the humidifying member of Comparative Example 2 having a honeycomb shape of 52.5 mm in length, 52.5 mm in width, and 50.0 mm in depth was produced by the same method for producing the porous ceramic body 2 except for the mold. Produced. The size per opening of the honeycomb is 2.5 mm × 2.5 mm, and the wall thickness between the openings is 2.5 mm. As a result of measuring the average pore diameter and the porosity by the mercury intrusion method, the average pore diameter was 1.5 μm and the porosity was 42.5%, as described above.

Next, these sample Nos. Using the humidifying members 1 to 3 and the humidifying members of Comparative Examples 1 and 2, the degree of water penetration when humidifying water was supplied from the center of the upper surface of the humidifying member was compared. As conditions, the supply flow rate of water for humidification is 10 cm ³ / s, and the degree of penetration of water into each part of the humidifying member at that time is one surface perpendicular to the gas blowing direction, before and after water permeates. The change in the color tone of the porous body was visually observed, and the time required until the color tone of the entire observation surface changed was confirmed by a method of measuring. In addition, it implemented after installing the weir board which consists of resin in the upper surface of a humidification member, and the boundary vicinity of an observation surface so that water may not drip on an observation surface from the upper surface of a humidification member.

  As a result, the humidifying member made of the polyethylene resin of Comparative Example 1 and the humidifying member having the honeycomb shape made of the ceramic porous body of Comparative Example 2 were partially humidified by the water dropped from the central portion of the upper surface of the humidifying member. The remaining water that has been absorbed by the porous body from the upper surface of the humidified member but has not been absorbed by the upper surface of the humidifying member overflows from the upper surface of the humidifying member and flows out to the side surface. Leakage was observed. Therefore, it took time for water to permeate the entire observation surface, particularly the central portion of the observation surface. The time required for Comparative Example 1 was about 12 seconds, and the time required for Comparative Example 2 was about 15 seconds.

  In addition, the humidifying member made of the polyethylene resin of Comparative Example 1 was confirmed by visual observation that in the state where water was absorbed and retained, most of the pores of the humidifying member were blocked by the absorbed and retained water. It is considered that the pressure loss when the gas is passed through the humidifying member by the blower 5 is increased.

  On the other hand, sample no. In the humidifying members 1 and 2, a part of the water dropped on the central portion of the upper surface of the humidifying member 1 is directly absorbed by the porous body 2 from the upper surface of the humidifying member 1, and the remaining portion is overlapped by the respective porous bodies 2. Through the minute gap generated on the mating surfaces, it quickly diffuses and penetrates downward and to the left and right of the humidifying member 1, and as a result, it is confirmed that water penetrates the entire observation surface in the required time of about 5 seconds. It was.

  In addition, Sample No. In the humidifying member 1 of FIG. 3, a part of the water dropped on the central portion of the upper surface of the humidifying member 1 is directly absorbed by the ceramic porous body 2 from the upper surface of the humidifying member 1, and the remainder is the porous body 2 of each ceramic. Through the minute gap formed on the overlapping surface and the minute groove provided on the overlapping surface in the left-right direction, and further rapidly diffuses and permeates below the humidifying member 1 and in the left-right direction. It was confirmed that water penetrated the entire observation surface in the required time.

  From the above results, sample No. If the humidifying members 1 to 3 are used, a plurality of flat plate-like porous bodies 2 each having a plurality of groove portions 3 provided on the main surface are superposed, so that a minute gap generated on the superposed surface causes the liquid to flow. It becomes possible to quickly supply the liquid to the entire humidifying member 1, and quickly supply the liquid for compensating the moisture inside the humidifying member 1 lost by humidifying the gas to each part of the humidifying member 1. It has been confirmed that the groove portion 3 can serve as a gas flow path to prevent gas pressure loss and improve the humidification efficiency by increasing the gas flow rate. .

  Further, it has been confirmed that the humidifier 10 using the humidifying member 1 can be a humidifier 10 that is more compact than the conventional one because of high humidification efficiency, has a low running cost, and is excellent in hygiene.

  In addition, Sample No. The humidifying members 1 and 2 are made of a plurality of ceramic plate-like porous bodies 2 that are superposed on each other. Therefore, even if heated to a high temperature of 800 ° C. in a firing furnace in an oxidizing atmosphere, There was no damage. Therefore, the humidifying member 1 made of the ceramic of the present invention can be heat-treated at a high temperature even when it is clogged due to the precipitation of impurities contained in dust, dust and liquid in the atmosphere and the humidifying efficiency is lowered. Therefore, it was confirmed that the humidification efficiency can be recovered by heat treatment.

  Furthermore, the humidifier 20 having the heating unit 7 for heating the humidifying member 1 of the present invention can easily evaporate the liquid, shorten the time until the start of humidification, and increase the humidification amount. Even when miscellaneous bacteria propagated, it was possible to sterilize by a heating part such as a heater, so that it was confirmed that the humidifier 20 was excellent in terms of hygiene.

It is a perspective view which shows an example of embodiment of the humidification member and humidifier of this invention. 1 shows an example of an embodiment of a humidifying member of the present invention, (a) is a perspective view of a humidifying member in which a plurality of flat plate-like porous bodies provided with grooves are stacked, and (b) is a cross section of the groove. FIG. 2 is a perspective view of a porous body having a rectangular shape, (c) a porous body having a semicircular cross section of a groove, and (d) a porous body having a triangular cross section of the groove. The other example of embodiment of the porous body which comprises the humidification member of this invention is shown, (e) is an example of the porous body which provided the inclined groove part, (f) is the porous which provided the wavy groove part (G) is a perspective view of an example of a porous body provided with intersecting grooves. It is a perspective view which shows the other example of embodiment of the humidifier of this invention. It is a schematic sectional drawing which shows an example of the humidifier of the conventional vaporization system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Humidification member 2: Porous body 3: Groove part 4: Liquid supply part 5: Blower means 6: Liquid receptacle 7: Heating part 8: Temperature controller
10: Humidifier
20: Humidifier (with heating part)

Claims (4)

A humidifying member for a humidifier that blows gas to a humidifying member that absorbs and holds liquid, evaporates the liquid and humidifies the gas, and has a plurality of grooves on a main surface along the blowing direction of the gas. A humidifying member, wherein a plurality of flat plate-like porous bodies provided are overlapped. The humidifying member according to claim 1, wherein the porous body is made of ceramics. A humidifier comprising the humidifying member according to claim 1. The humidifier according to claim 3, further comprising a heating unit that heats the humidifying member.

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